Push-driven checkout diff subscriptions for changes sidebar (#24)

* Implement push-driven checkout diff subscriptions * Remove legacy checkout diff polling RPC * Fix checkout diff watcher coverage and fallback refresh
2026-02-11 14:11:00 +08:00
parent 8e5ba622ee
commit a6f60091f2
9 changed files with 1066 additions and 67 deletions
@@ -0,0 +1,48 @@
+import { describe, expect, it } from "vitest";
+import {
+  compareCheckoutDiffPaths,
+  orderCheckoutDiffFiles,
+} from "./checkout-diff-order";
+
+function createFile(path: string, additions = 0) {
+  return {
+    path,
+    isNew: false,
+    isDeleted: false,
+    additions,
+    deletions: 0,
+    hunks: [],
+  };
+}
+
+describe("checkout diff ordering", () => {
+  it("compares paths deterministically", () => {
+    expect(compareCheckoutDiffPaths("a.ts", "b.ts")).toBeLessThan(0);
+    expect(compareCheckoutDiffPaths("b.ts", "a.ts")).toBeGreaterThan(0);
+    expect(compareCheckoutDiffPaths("same.ts", "same.ts")).toBe(0);
+  });
+
+  it("sorts files by path", () => {
+    const ordered = orderCheckoutDiffFiles([
+      createFile("zeta.ts"),
+      createFile("alpha.ts"),
+      createFile("beta.ts"),
+    ]);
+
+    expect(ordered.map((file) => file.path)).toEqual([
+      "alpha.ts",
+      "beta.ts",
+      "zeta.ts",
+    ]);
+  });
+
+  it("preserves relative order for equal paths", () => {
+    const ordered = orderCheckoutDiffFiles([
+      createFile("same.ts", 1),
+      createFile("same.ts", 2),
+      createFile("same.ts", 3),
+    ]);
+
+    expect(ordered.map((file) => file.additions)).toEqual([1, 2, 3]);
+  });
+});